Finding the Fourth Proportional to 3,978.86, 5,970.23 and 1,606.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.86 : 5,970.23 = 1,606.85 : x
2. Step 2: Convert to fraction form
   3,978.86/5,970.23 = 1,606.85/x
3. Step 3: Cross multiply
   3,978.86x = 5,970.23 × 1,606.85
4. Step 4: Simplify right side
   3,978.86x = 9,593,238.24
5. Step 5: Solve for x
   x = 9,593,238.24/3,978.86
6. Step 6: Final answer
   x = 2,411.05